The take home that I get from that Darlington article is that that should be a seat Labour should hold comfortably. Despite the asides in there about Brexit the common theme is that people there care about their local services and economy. A shadow minister dropping in and making a speech about how their priority is going to be better health and social care services, more money for councils to deliver the services that make for a decent life, prosperity through jobs with decent pay and housing for people who need it, funded by taxation on the wealthy and the corporate. Well that ought to do it.